Inline Embeds

The chat renderer lets you embed a sandboxed iframe pointing at any same-origin route of this app, rendered inline with your reply. Use this when a live, interactive preview communicates more than prose or a static screenshot — a chart, an email thread, a slide, a form, a ticket.

The embed fence

Emit a fenced code block with the language embed:

```embed
src: /email?id=msg_123
aspect: 4/3
title: Re: Q4 planning
```